Add a way for holders of START_ACTIVITIES_FROM_BACKGROUND

to allow bg activity starts starts from specific receivers

Leverage the existing infrastructure we have - BroadcastOptions.

Bug: 124159654
Test: manual (with the other CL on the topic - try to call someone
      from Contacts app and see that the flag gets applied correctly)
Change-Id: I1220eb14d86d549a18d0d229ffb19a94a8affd66